---
title: "CVE-2026-120534: Advanced Custom Fields Extended PRO - Code Injection"
description: "Advanced Custom Fields: Extended PRO for WordPress <= 0.9.2.6 contains a limited code injection caused by insufficient validation of form configuration parameters in render_field, letting unauthenticated attackers call arbitrary WordPress functions, exploit requires shortcode_preview enabled or lack of OpenSSL."
url: https://panop.io/threat-heartbeat/CVE-2026-120534/
---

# CVE-2026-120534 Advanced Custom Fields Extended PRO - Code Injection

Advanced Custom Fields: Extended PRO for WordPress <= 0.9.2.6 contains a limited code injection caused by insufficient validation of form configuration parameters in render\_field, letting unauthenticated attackers call arbitrary WordPress functions, exploit requires shortcode\_preview enabled or lack of OpenSSL.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-120534)

## Details

Type

Code Injection

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

3 November 2026

Updated

3 November 2026

Weakness

[CWE-434](https://cwe.mitre.org/data/definitions/434.html)

## Vendor fix

Update to the latest version beyond 0.9.2.6.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-120534](https://nvd.nist.gov/vuln/detail/CVE-2026-120534)
- [https://www.acf-extended.com/changelog](https://www.acf-extended.com/changelog)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/b8a7a925-2b9e-43bc-b649-c7ec518e063c?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/b8a7a925-2b9e-43bc-b649-c7ec518e063c?source=cve)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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